20492615373129 has 9 divisors (see below), whose sum is σ = 29600464044333. Its totient is φ = 13661734528332.

The previous prime is 20492615373107. The next prime is 20492615373143. The reversal of 20492615373129 is 92137351629402.

It is a happy number.

The square root of 20492615373129 is 4526877.

It is a perfect power (a square), and thus also a powerful number.

20492615373129 is a `hidden beast` number, since 2 + 0 + 4 + 9 + 2 + 615 + 3 + 7 + 3 + 12 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 20492615373129 - 2³⁷ = 20355176419657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20492615323129) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12826152 + ... + 14335110.

Almost surely, 2^{20492615373129} is an apocalyptic number.

20492615373129 is the 4526877-th square number.

20492615373129 is the 2263439-th centered octagonal number.

It is an amenable number.

20492615373129 is a deficient number, since it is larger than the sum of its proper divisors (9107848671204).

20492615373129 is an frugal number, since it uses more digits than its factorization.

20492615373129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017924 (or 1508962 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 20492615373129 in words is "twenty trillion, four hundred ninety-two billion, six hundred fifteen million, three hundred seventy-three thousand, one hundred twenty-nine".