2157079749048 has 192 divisors, whose sum is σ = 6917385758400. Its totient is φ = 594153584640.

The previous prime is 2157079749043. The next prime is 2157079749053. The reversal of 2157079749048 is 8409479707512.

2157079749048 is a `hidden beast` number, since 2 + 1 + 5 + 70 + 79 + 7 + 490 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (2157079749043) and next prime (2157079749053).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157079749043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9549540 + ... + 9772812.

It is an arithmetic number, because the mean of its divisors is an integer number (36028050825).

Almost surely, 2^{2157079749048} is an apocalyptic number.

2157079749048 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157079749048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3458692879200).

2157079749048 is an abundant number, since it is smaller than the sum of its proper divisors (4760306009352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2157079749048 is a wasteful number, since it uses less digits than its factorization.

2157079749048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223982 (or 223975 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 63.

The spelling of 2157079749048 in words is "two trillion, one hundred fifty-seven billion, seventy-nine million, seven hundred forty-nine thousand, forty-eight".