977028998401 has 2 divisors, whose sum is σ = 977028998402. Its totient is φ = 977028998400.

The previous prime is 977028998371. The next prime is 977028998431. The reversal of 977028998401 is 104899820779.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (977028998371) and next prime (977028998431).

It can be written as a sum of positive squares in only one way, i.e., 935514528400 + 41514470001 = 967220^2 + 203751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-977028998401 is a prime.

It is a super-2 number, since 2×977028998401² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (977028998431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488514499200 + 488514499201.

It is an arithmetic number, because the mean of its divisors is an integer number (488514499201).

Almost surely, 2^977028998401 is an apocalyptic number.

It is an amenable number.

977028998401 is a deficient number, since it is larger than the sum of its proper divisors (1).

977028998401 is an equidigital number, since it uses as much as digits as its factorization.

977028998401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 64.

The spelling of 977028998401 in words is "nine hundred seventy-seven billion, twenty-eight million, nine hundred ninety-eight thousand, four hundred one".