1616720487494 has 32 divisors (see below), whose sum is σ = 2774346306816. Its totient is φ = 692174224800.

The previous prime is 1616720487493. The next prime is 1616720487497. The reversal of 1616720487494 is 4947840276161.

It is a super-2 number, since 2×1616720487494² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616720487493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57930944 + ... + 57958844.

It is an arithmetic number, because the mean of its divisors is an integer number (86698322088).

Almost surely, 2^{1616720487494} is an apocalyptic number.

1616720487494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1616720487494 is a deficient number, since it is larger than the sum of its proper divisors (1157625819322).

1616720487494 is a wasteful number, since it uses less digits than its factorization.

1616720487494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31980.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 1616720487494 in words is "one trillion, six hundred sixteen billion, seven hundred twenty million, four hundred eighty-seven thousand, four hundred ninety-four".