5165605155651 has 16 divisors (see below), whose sum is σ = 7462214838144. Its totient is φ = 3165788110464.

The previous prime is 5165605155643. The next prime is 5165605155679. The reversal of 5165605155651 is 1565515065615.

It is not a de Polignac number, because 5165605155651 - 2³ = 5165605155643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 5165605155594 and 5165605155603.

It is not an unprimeable number, because it can be changed into a prime (5165605155611) 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, 1177746361 + ... + 1177750746.

It is an arithmetic number, because the mean of its divisors is an integer number (466388427384).

Almost surely, 2^{5165605155651} is an apocalyptic number.

5165605155651 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5165605155651 is a deficient number, since it is larger than the sum of its proper divisors (2296609682493).

5165605155651 is a wasteful number, since it uses less digits than its factorization.

5165605155651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355497170.

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 5165605155651 in words is "five trillion, one hundred sixty-five billion, six hundred five million, one hundred fifty-five thousand, six hundred fifty-one".