1551015161051 has 4 divisors (see below), whose sum is σ = 1551390804600. Its totient is φ = 1550639517504.

The previous prime is 1551015161041. The next prime is 1551015161057. The reversal of 1551015161051 is 1501615101551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1551015161051 - 2²⁶ = 1550948052187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1551015160999 and 1551015161017.

It is not an unprimeable number, because it can be changed into a prime (1551015161057) 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, 187815581 + ... + 187823838.

It is an arithmetic number, because the mean of its divisors is an integer number (387847701150).

Almost surely, 2^{1551015161051} is an apocalyptic number.

1551015161051 is a deficient number, since it is larger than the sum of its proper divisors (375643549).

1551015161051 is an equidigital number, since it uses as much as digits as its factorization.

1551015161051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375643548.

The product of its (nonzero) digits is 3750, while the sum is 32.

The spelling of 1551015161051 in words is "one trillion, five hundred fifty-one billion, fifteen million, one hundred sixty-one thousand, fifty-one".