155771995053 has 4 divisors (see below), whose sum is σ = 207695993408. Its totient is φ = 103847996700.

The previous prime is 155771995033. The next prime is 155771995063. The reversal of 155771995053 is 350599177551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 155771995053 - 2¹⁴ = 155771978669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155771994984 and 155771995002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155771995033) 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, 25961999173 + ... + 25961999178.

It is an arithmetic number, because the mean of its divisors is an integer number (51923998352).

Almost surely, 2^155771995053 is an apocalyptic number.

It is an amenable number.

155771995053 is a deficient number, since it is larger than the sum of its proper divisors (51923998355).

155771995053 is an equidigital number, since it uses as much as digits as its factorization.

155771995053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51923998354.

The product of its (nonzero) digits is 7441875, while the sum is 57.

The spelling of 155771995053 in words is "one hundred fifty-five billion, seven hundred seventy-one million, nine hundred ninety-five thousand, fifty-three".