21737308054 has 48 divisors (see below), whose sum is σ = 41322393504. Its totient is φ = 8394059520.

The previous prime is 21737308051. The next prime is 21737308067. The reversal of 21737308054 is 45080373712.

It is a happy number.

It is a super-2 number, since 2×21737308054² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21737307998 and 21737308016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21737308051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134644 + ... + 248200.

It is an arithmetic number, because the mean of its divisors is an integer number (860883198).

Almost surely, 2^21737308054 is an apocalyptic number.

21737308054 is a deficient number, since it is larger than the sum of its proper divisors (19585085450).

21737308054 is a wasteful number, since it uses less digits than its factorization.

21737308054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113701 (or 113690 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 21737308054 in words is "twenty-one billion, seven hundred thirty-seven million, three hundred eight thousand, fifty-four".