20151776148 has 24 divisors (see below), whose sum is σ = 53738069952. Its totient is φ = 5757650304.

The previous prime is 20151776147. The next prime is 20151776159. The reversal of 20151776148 is 84167715102.

It is a super-3 number, since 3×20151776148³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151776147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119950965 + ... + 119951132.

It is an arithmetic number, because the mean of its divisors is an integer number (2239086248).

Almost surely, 2^20151776148 is an apocalyptic number.

20151776148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20151776148 is an abundant number, since it is smaller than the sum of its proper divisors (33586293804).

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

20151776148 is a wasteful number, since it uses less digits than its factorization.

20151776148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239902111 (or 239902109 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 20151776148 in words is "twenty billion, one hundred fifty-one million, seven hundred seventy-six thousand, one hundred forty-eight".