17690042557 has 8 divisors (see below), whose sum is σ = 19300393440. Its totient is φ = 16080052560.

The previous prime is 17690042533. The next prime is 17690042567. The reversal of 17690042557 is 75524009671.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 17690042557 - 2⁷ = 17690042429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17690042567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17919 + ... + 188947.

It is an arithmetic number, because the mean of its divisors is an integer number (2412549180).

Almost surely, 2^17690042557 is an apocalyptic number.

It is an amenable number.

17690042557 is a deficient number, since it is larger than the sum of its proper divisors (1610350883).

17690042557 is a wasteful number, since it uses less digits than its factorization.

17690042557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180443.

The product of its (nonzero) digits is 529200, while the sum is 46.

It can be divided in two parts, 1769004 and 2557, that added together give a 6-th power (1771561 = 11⁶).

The spelling of 17690042557 in words is "seventeen billion, six hundred ninety million, forty-two thousand, five hundred fifty-seven".