155571716955 has 24 divisors (see below), whose sum is σ = 249201775152. Its totient is φ = 82876015872.

The previous prime is 155571716941. The next prime is 155571716969. The reversal of 155571716955 is 559617175551.

It is an interprime number because it is at equal distance from previous prime (155571716941) and next prime (155571716969).

It is not a de Polignac number, because 155571716955 - 2⁷ = 155571716827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155571716895 and 155571716904.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13163629 + ... + 13175441.

It is an arithmetic number, because the mean of its divisors is an integer number (10383407298).

Almost surely, 2^155571716955 is an apocalyptic number.

155571716955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155571716955 is a deficient number, since it is larger than the sum of its proper divisors (93630058197).

155571716955 is an frugal number, since it uses more digits than its factorization.

155571716955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13695 (or 12758 counting only the distinct ones).

The product of its digits is 8268750, while the sum is 57.

The spelling of 155571716955 in words is "one hundred fifty-five billion, five hundred seventy-one million, seven hundred sixteen thousand, nine hundred fifty-five".