20610146748957 has 8 divisors (see below), whose sum is σ = 27491453436480. Its totient is φ = 13734468947040.

The previous prime is 20610146748899. The next prime is 20610146749043. The reversal of 20610146748957 is 75984764101602.

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

It is not a de Polignac number, because 20610146748957 - 2¹⁵ = 20610146716189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20610146748957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20610146738957) 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, 1407212857 + ... + 1407227502.

It is an arithmetic number, because the mean of its divisors is an integer number (3436431679560).

Almost surely, 2^{20610146748957} is an apocalyptic number.

It is an amenable number.

20610146748957 is a deficient number, since it is larger than the sum of its proper divisors (6881306687523).

20610146748957 is a wasteful number, since it uses less digits than its factorization.

20610146748957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2814442803.

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 20610146748957 in words is "twenty trillion, six hundred ten billion, one hundred forty-six million, seven hundred forty-eight thousand, nine hundred fifty-seven".