20415516510292 has 6 divisors (see below), whose sum is σ = 35727153893018. Its totient is φ = 10207758255144.

The previous prime is 20415516510287. The next prime is 20415516510293. The reversal of 20415516510292 is 29201561551402.

It can be written as a sum of positive squares in only one way, i.e., 18843968449296 + 1571548060996 = 4340964^2 + 1253614^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20415516510293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2551939563783 + ... + 2551939563790.

Almost surely, 2^{20415516510292} is an apocalyptic number.

It is an amenable number.

20415516510292 is a deficient number, since it is larger than the sum of its proper divisors (15311637382726).

20415516510292 is a wasteful number, since it uses less digits than its factorization.

20415516510292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103879127577 (or 5103879127575 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 20415516510292 in words is "twenty trillion, four hundred fifteen billion, five hundred sixteen million, five hundred ten thousand, two hundred ninety-two".