20153155344 has 40 divisors (see below), whose sum is σ = 59499792960. Its totient is φ = 5758044288.

The previous prime is 20153155327. The next prime is 20153155361. The reversal of 20153155344 is 44355135102.

It is an interprime number because it is at equal distance from previous prime (20153155327) and next prime (20153155361).

It is a super-2 number, since 2×20153155344² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29989479 + ... + 29990150.

It is an arithmetic number, because the mean of its divisors is an integer number (1487494824).

Almost surely, 2^20153155344 is an apocalyptic number.

20153155344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20153155344 is an abundant number, since it is smaller than the sum of its proper divisors (39346637616).

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

20153155344 is a wasteful number, since it uses less digits than its factorization.

20153155344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59979647 (or 59979641 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 20153155344 in words is "twenty billion, one hundred fifty-three million, one hundred fifty-five thousand, three hundred forty-four".