20832647451 has 32 divisors (see below), whose sum is σ = 36453580800. Its totient is φ = 10252565280.

The previous prime is 20832647441. The next prime is 20832647453. The reversal of 20832647451 is 15474623802.

It is not a de Polignac number, because 20832647451 - 2⁷ = 20832647323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20832647453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2368891 + ... + 2377668.

It is an arithmetic number, because the mean of its divisors is an integer number (1139174400).

Almost surely, 2^20832647451 is an apocalyptic number.

20832647451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20832647451 is a deficient number, since it is larger than the sum of its proper divisors (15620933349).

20832647451 is a wasteful number, since it uses less digits than its factorization.

20832647451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4746599.

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 20832647451 in words is "twenty billion, eight hundred thirty-two million, six hundred forty-seven thousand, four hundred fifty-one".