21345937950930 has 64 divisors (see below), whose sum is σ = 53927339811840. Its totient is φ = 5392582036416.

The previous prime is 21345937950913. The next prime is 21345937950937. The reversal of 21345937950930 is 3905973954312.

It is not an unprimeable number, because it can be changed into a prime (21345937950937) 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, 47956579 + ... + 48399641.

It is an arithmetic number, because the mean of its divisors is an integer number (842614684560).

Almost surely, 2^{21345937950930} is an apocalyptic number.

21345937950930 is an abundant number, since it is smaller than the sum of its proper divisors (32581401860910).

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

21345937950930 is a wasteful number, since it uses less digits than its factorization.

21345937950930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527615.

The product of its (nonzero) digits is 27556200, while the sum is 60.

The spelling of 21345937950930 in words is "twenty-one trillion, three hundred forty-five billion, nine hundred thirty-seven million, nine hundred fifty thousand, nine hundred thirty".