155415401847 has 12 divisors (see below), whose sum is σ = 224714091160. Its totient is φ = 103506339888.

The previous prime is 155415401807. The next prime is 155415401857. The reversal of 155415401847 is 748104514551.

It is a happy number.

155415401847 is a `hidden beast` number, since 1 + 5 + 54 + 1 + 540 + 18 + 47 = 666.

It is not a de Polignac number, because 155415401847 - 2⁷ = 155415401719 is a prime.

It is a super-2 number, since 2×155415401847² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155415401807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8651197 + ... + 8669142.

Almost surely, 2^155415401847 is an apocalyptic number.

155415401847 is a deficient number, since it is larger than the sum of its proper divisors (69298689313).

155415401847 is a wasteful number, since it uses less digits than its factorization.

155415401847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17321342 (or 17321339 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The spelling of 155415401847 in words is "one hundred fifty-five billion, four hundred fifteen million, four hundred one thousand, eight hundred forty-seven".