1617572046542 has 4 divisors (see below), whose sum is σ = 2426358069816. Its totient is φ = 808786023270.

The previous prime is 1617572046533. The next prime is 1617572046593. The reversal of 1617572046542 is 2456402757161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404393011634 + ... + 404393011637.

It is an arithmetic number, because the mean of its divisors is an integer number (606589517454).

Almost surely, 2^{1617572046542} is an apocalyptic number.

1617572046542 is a deficient number, since it is larger than the sum of its proper divisors (808786023274).

1617572046542 is an equidigital number, since it uses as much as digits as its factorization.

1617572046542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808786023273.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 1617572046542 in words is "one trillion, six hundred seventeen billion, five hundred seventy-two million, forty-six thousand, five hundred forty-two".