20251146143165 has 16 divisors (see below), whose sum is σ = 27773163681408. Its totient is φ = 13886418584256.

The previous prime is 20251146143147. The next prime is 20251146143197. The reversal of 20251146143165 is 56134164115202.

It is a cyclic number.

It is not a de Polignac number, because 20251146143165 - 2³⁶ = 20182426666429 is a prime.

It is a super-2 number, since 2×20251146143165² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4675319 + ... + 7896891.

It is an arithmetic number, because the mean of its divisors is an integer number (1735822730088).

Almost surely, 2^{20251146143165} is an apocalyptic number.

It is an amenable number.

20251146143165 is a deficient number, since it is larger than the sum of its proper divisors (7522017538243).

20251146143165 is a wasteful number, since it uses less digits than its factorization.

20251146143165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401188.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 20251146143165 in words is "twenty trillion, two hundred fifty-one billion, one hundred forty-six million, one hundred forty-three thousand, one hundred sixty-five".