11954003657 has 2 divisors, whose sum is σ = 11954003658. Its totient is φ = 11954003656.

The previous prime is 11954003599. The next prime is 11954003717. The reversal of 11954003657 is 75630045911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7167992896 + 4786010761 = 84664^2 + 69181^2 .

It is a cyclic number.

It is not a de Polignac number, because 11954003657 - 2¹⁰ = 11954002633 is a prime.

It is not a weakly prime, because it can be changed into another prime (11954003357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5977001828 + 5977001829.

It is an arithmetic number, because the mean of its divisors is an integer number (5977001829).

Almost surely, 2^11954003657 is an apocalyptic number.

It is an amenable number.

11954003657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11954003657 is an equidigital number, since it uses as much as digits as its factorization.

11954003657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 11954003657 in words is "eleven billion, nine hundred fifty-four million, three thousand, six hundred fifty-seven".