920888079451 has 2 divisors, whose sum is σ = 920888079452. Its totient is φ = 920888079450.

The previous prime is 920888079403. The next prime is 920888079479. The reversal of 920888079451 is 154970888029.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920888079451 is a prime.

It is a super-2 number, since 2×920888079451² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 920888079451.

It is not a weakly prime, because it can be changed into another prime (920888079751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460444039725 + 460444039726.

It is an arithmetic number, because the mean of its divisors is an integer number (460444039726).

Almost surely, 2^920888079451 is an apocalyptic number.

920888079451 is a deficient number, since it is larger than the sum of its proper divisors (1).

920888079451 is an equidigital number, since it uses as much as digits as its factorization.

920888079451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 61.

The spelling of 920888079451 in words is "nine hundred twenty billion, eight hundred eighty-eight million, seventy-nine thousand, four hundred fifty-one".