155415401807 has 2 divisors, whose sum is σ = 155415401808. Its totient is φ = 155415401806.

The previous prime is 155415401797. The next prime is 155415401857. The reversal of 155415401807 is 708104514551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155415401807 - 2²⁰ = 155414353231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155415401857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77707700903 + 77707700904.

It is an arithmetic number, because the mean of its divisors is an integer number (77707700904).

Almost surely, 2^155415401807 is an apocalyptic number.

155415401807 is a deficient number, since it is larger than the sum of its proper divisors (1).

155415401807 is an equidigital number, since it uses as much as digits as its factorization.

155415401807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112000, while the sum is 41.

The spelling of 155415401807 in words is "one hundred fifty-five billion, four hundred fifteen million, four hundred one thousand, eight hundred seven".