920437340521 has 16 divisors (see below), whose sum is σ = 945595461888. Its totient is φ = 895451760000.

The previous prime is 920437340491. The next prime is 920437340567. The reversal of 920437340521 is 125043734029.

It is a cyclic number.

It is not a de Polignac number, because 920437340521 - 2⁵ = 920437340489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920437340021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48432021 + ... + 48451021.

It is an arithmetic number, because the mean of its divisors is an integer number (59099716368).

Almost surely, 2^920437340521 is an apocalyptic number.

It is an amenable number.

920437340521 is a deficient number, since it is larger than the sum of its proper divisors (25158121367).

920437340521 is a wasteful number, since it uses less digits than its factorization.

920437340521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23472.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 920437340521 in words is "nine hundred twenty billion, four hundred thirty-seven million, three hundred forty thousand, five hundred twenty-one".