49356206640 has 720 divisors, whose sum is σ = 189245833920. Its totient is φ = 11506360320.

The previous prime is 49356206639. The next prime is 49356206657. The reversal of 49356206640 is 4660265394.

49356206640 is a `hidden beast` number, since 49 + 3 + 562 + 0 + 6 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 250539022 + ... + 250539218.

It is an arithmetic number, because the mean of its divisors is an integer number (262841436).

Almost surely, 2^49356206640 is an apocalyptic number.

49356206640 is a gapful number since it is divisible by the number (40) 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 49356206640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94622916960).

49356206640 is an abundant number, since it is smaller than the sum of its proper divisors (139889627280).

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

49356206640 is a wasteful number, since it uses less digits than its factorization.

49356206640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 49356206640 in words is "forty-nine billion, three hundred fifty-six million, two hundred six thousand, six hundred forty".