21276932958 has 32 divisors (see below), whose sum is σ = 47286865920. Its totient is φ = 7091592120.

The previous prime is 21276932951. The next prime is 21276932983. The reversal of 21276932958 is 85923967212.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21276932951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949641 + ... + 971787.

It is an arithmetic number, because the mean of its divisors is an integer number (1477714560).

Almost surely, 2^21276932958 is an apocalyptic number.

21276932958 is an abundant number, since it is smaller than the sum of its proper divisors (26009932962).

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

21276932958 is a wasteful number, since it uses less digits than its factorization.

21276932958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39949 (or 39943 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 21276932958 in words is "twenty-one billion, two hundred seventy-six million, nine hundred thirty-two thousand, nine hundred fifty-eight".