90419387057 has 4 divisors (see below), whose sum is σ = 90817710576. Its totient is φ = 90021063540.

The previous prime is 90419387053. The next prime is 90419387059. The reversal of 90419387057 is 75078391409.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75078391409 = 7 ⋅10725484487.

It is a cyclic number.

It is not a de Polignac number, because 90419387057 - 2² = 90419387053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90419387053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199161419 + ... + 199161872.

It is an arithmetic number, because the mean of its divisors is an integer number (22704427644).

Almost surely, 2^90419387057 is an apocalyptic number.

It is an amenable number.

90419387057 is a deficient number, since it is larger than the sum of its proper divisors (398323519).

90419387057 is a wasteful number, since it uses less digits than its factorization.

90419387057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398323518.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 90419387057 in words is "ninety billion, four hundred nineteen million, three hundred eighty-seven thousand, fifty-seven".