20515153362040 has 32 divisors (see below), whose sum is σ = 46304707380480. Its totient is φ = 8180174710912.

The previous prime is 20515153362031. The next prime is 20515153362047. The reversal of 20515153362040 is 4026335151502.

It is a super-2 number, since 2×20515153362040² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20515153362047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808944472 + ... + 808969831.

It is an arithmetic number, because the mean of its divisors is an integer number (1447022105640).

Almost surely, 2^{20515153362040} is an apocalyptic number.

20515153362040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20515153362040 is an abundant number, since it is smaller than the sum of its proper divisors (25789554018440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20515153362040 is a wasteful number, since it uses less digits than its factorization.

20515153362040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617914631 (or 1617914627 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 20515153362040 in words is "twenty trillion, five hundred fifteen billion, one hundred fifty-three million, three hundred sixty-two thousand, forty".