21150024536040 has 32 divisors (see below), whose sum is σ = 63450073608480. Its totient is φ = 5640006542912.

The previous prime is 21150024536029. The next prime is 21150024536059. The reversal of 21150024536040 is 4063542005112.

It is a junction number, because it is equal to n+sod(n) for n = 21150024535992 and 21150024536010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88125102114 + ... + 88125102353.

It is an arithmetic number, because the mean of its divisors is an integer number (1982814800265).

Almost surely, 2^{21150024536040} is an apocalyptic number.

21150024536040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21150024536040 is an abundant number, since it is smaller than the sum of its proper divisors (42300049072440).

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

21150024536040 is a wasteful number, since it uses less digits than its factorization.

21150024536040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176250204481 (or 176250204477 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 21150024536040 in words is "twenty-one trillion, one hundred fifty billion, twenty-four million, five hundred thirty-six thousand, forty".