1061557768131 has 64 divisors (see below), whose sum is σ = 1666137784320. Its totient is φ = 588688974720.

The previous prime is 1061557768129. The next prime is 1061557768169. The reversal of 1061557768131 is 1318677551601.

It is not a de Polignac number, because 1061557768131 - 2¹ = 1061557768129 is a prime.

It is a super-2 number, since 2×1061557768131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061557768111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 166724910 + ... + 166731276.

It is an arithmetic number, because the mean of its divisors is an integer number (26033402880).

Almost surely, 2^{1061557768131} is an apocalyptic number.

1061557768131 is a deficient number, since it is larger than the sum of its proper divisors (604580016189).

1061557768131 is a wasteful number, since it uses less digits than its factorization.

1061557768131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8184.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 1061557768131 in words is "one trillion, sixty-one billion, five hundred fifty-seven million, seven hundred sixty-eight thousand, one hundred thirty-one".