1361777575551 has 16 divisors (see below), whose sum is σ = 1816742318304. Its totient is φ = 907332395904.

The previous prime is 1361777575537. The next prime is 1361777575553. The reversal of 1361777575551 is 1555757771631.

It is not a de Polignac number, because 1361777575551 - 2⁷ = 1361777575423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361777575553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94318305 + ... + 94332741.

It is an arithmetic number, because the mean of its divisors is an integer number (113546394894).

Almost surely, 2^{1361777575551} is an apocalyptic number.

1361777575551 is a deficient number, since it is larger than the sum of its proper divisors (454964742753).

1361777575551 is a wasteful number, since it uses less digits than its factorization.

1361777575551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30250.

The product of its digits is 27011250, while the sum is 60.

The spelling of 1361777575551 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-seven million, five hundred seventy-five thousand, five hundred fifty-one".