1617542151620 has 48 divisors (see below), whose sum is σ = 3549788782848. Its totient is φ = 618523772160.

The previous prime is 1617542151619. The next prime is 1617542151649. The reversal of 1617542151620 is 261512457161.

It is a super-2 number, since 2×1617542151620² (a number of 25 digits) contains 22 as substring.

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, 19968761 + ... + 20049600.

It is an arithmetic number, because the mean of its divisors is an integer number (73953932976).

Almost surely, 2^{1617542151620} is an apocalyptic number.

1617542151620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1617542151620 is an abundant number, since it is smaller than the sum of its proper divisors (1932246631228).

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

1617542151620 is a wasteful number, since it uses less digits than its factorization.

1617542151620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40018460 (or 40018458 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 1617542151620 in words is "one trillion, six hundred seventeen billion, five hundred forty-two million, one hundred fifty-one thousand, six hundred twenty".