7923203812657 has 12 divisors (see below), whose sum is σ = 9218442255156. Its totient is φ = 6790098708960.

The previous prime is 7923203812631. The next prime is 7923203812663. The reversal of 7923203812657 is 7562183023297.

It can be written as a sum of positive squares in 2 ways, for example, as 168309985536 + 7754893827121 = 410256^2 + 2784761^2 .

It is not a de Polignac number, because 7923203812657 - 2¹⁵ = 7923203779889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7923203812598 and 7923203812607.

It is not an unprimeable number, because it can be changed into a prime (7923203812357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14234194 + ... + 14780347.

It is an arithmetic number, because the mean of its divisors is an integer number (768203521263).

Almost surely, 2^{7923203812657} is an apocalyptic number.

It is an amenable number.

7923203812657 is a deficient number, since it is larger than the sum of its proper divisors (1295238442499).

7923203812657 is a wasteful number, since it uses less digits than its factorization.

7923203812657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29020128 (or 29020121 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 7923203812657 in words is "seven trillion, nine hundred twenty-three billion, two hundred three million, eight hundred twelve thousand, six hundred fifty-seven".