155407340740812 has 12 divisors (see below), whose sum is σ = 362617128395256. Its totient is φ = 51802446913600.

The previous prime is 155407340740811. The next prime is 155407340740961. The reversal of 155407340740812 is 218047043704551.

155407340740812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×155407340740812² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155407340740811) 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, 6475305864189 + ... + 6475305864212.

It is an arithmetic number, because the mean of its divisors is an integer number (30218094032938).

Almost surely, 2^{155407340740812} is an apocalyptic number.

155407340740812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155407340740812 is an abundant number, since it is smaller than the sum of its proper divisors (207209787654444).

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

155407340740812 is a wasteful number, since it uses less digits than its factorization.

155407340740812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12950611728408 (or 12950611728406 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 51.

The spelling of 155407340740812 in words is "one hundred fifty-five trillion, four hundred seven billion, three hundred forty million, seven hundred forty thousand, eight hundred twelve".