155145007907 has 4 divisors (see below), whose sum is σ = 155560946640. Its totient is φ = 154729069176.

The previous prime is 155145007891. The next prime is 155145007931. The reversal of 155145007907 is 709700541551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709700541551 = 43 ⋅16504663757.

It is a cyclic number.

It is not a de Polignac number, because 155145007907 - 2⁴ = 155145007891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155145007937) 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, 207968807 + ... + 207969552.

It is an arithmetic number, because the mean of its divisors is an integer number (38890236660).

Almost surely, 2^155145007907 is an apocalyptic number.

155145007907 is a deficient number, since it is larger than the sum of its proper divisors (415938733).

155145007907 is an equidigital number, since it uses as much as digits as its factorization.

155145007907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415938732.

The product of its (nonzero) digits is 220500, while the sum is 44.

The spelling of 155145007907 in words is "one hundred fifty-five billion, one hundred forty-five million, seven thousand, nine hundred seven".