1157256220051 has 8 divisors (see below), whose sum is σ = 1175554888704. Its totient is φ = 1139013087240.

The previous prime is 1157256220039. The next prime is 1157256220091. The reversal of 1157256220051 is 1500226527511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157256220051 - 2¹¹ = 1157256218003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157256220091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13841955 + ... + 13925308.

It is an arithmetic number, because the mean of its divisors is an integer number (146944361088).

Almost surely, 2^{1157256220051} is an apocalyptic number.

1157256220051 is a deficient number, since it is larger than the sum of its proper divisors (18298668653).

1157256220051 is an equidigital number, since it uses as much as digits as its factorization.

1157256220051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27767921.

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 1157256220051 in words is "one trillion, one hundred fifty-seven billion, two hundred fifty-six million, two hundred twenty thousand, fifty-one".