1663857334590 has 32 divisors (see below), whose sum is σ = 4356281022336. Its totient is φ = 403359353760.

The previous prime is 1663857334493. The next prime is 1663857334627. The reversal of 1663857334590 is 954337583661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2520995632 + ... + 2520996291.

It is an arithmetic number, because the mean of its divisors is an integer number (136133781948).

Almost surely, 2^{1663857334590} is an apocalyptic number.

1663857334590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663857334590 is an abundant number, since it is smaller than the sum of its proper divisors (2692423687746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663857334590 is a wasteful number, since it uses less digits than its factorization.

1663857334590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041991944.

The product of its (nonzero) digits is 48988800, while the sum is 60.

The spelling of 1663857334590 in words is "one trillion, six hundred sixty-three billion, eight hundred fifty-seven million, three hundred thirty-four thousand, five hundred ninety".