155344679720 has 16 divisors (see below), whose sum is σ = 349525529460. Its totient is φ = 62137871872.

The previous prime is 155344679717. The next prime is 155344679723. The reversal of 155344679720 is 27976443551.

It is an interprime number because it is at equal distance from previous prime (155344679717) and next prime (155344679723).

It can be written as a sum of positive squares in 2 ways, for example, as 155335303876 + 9375844 = 394126^2 + 3062^2 .

It is not an unprimeable number, because it can be changed into a prime (155344679723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941808457 + ... + 1941808536.

Almost surely, 2^155344679720 is an apocalyptic number.

155344679720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155344679720 is an abundant number, since it is smaller than the sum of its proper divisors (194180849740).

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

155344679720 is a wasteful number, since it uses less digits than its factorization.

155344679720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883617004 (or 3883617000 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 53.

The spelling of 155344679720 in words is "one hundred fifty-five billion, three hundred forty-four million, six hundred seventy-nine thousand, seven hundred twenty".