1332016401556 has 24 divisors (see below), whose sum is σ = 2401685904744. Its totient is φ = 646008222720.

The previous prime is 1332016401553. The next prime is 1332016401613. The reversal of 1332016401556 is 6551046102331.

It can be written as a sum of positive squares in 4 ways, for example, as 9783188100 + 1322233213456 = 98910^2 + 1149884^2 .

It is a super-2 number, since 2×1332016401556² (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 (1332016401553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23445765 + ... + 23502508.

It is an arithmetic number, because the mean of its divisors is an integer number (100070246031).

Almost surely, 2^{1332016401556} is an apocalyptic number.

It is an amenable number.

1332016401556 is a deficient number, since it is larger than the sum of its proper divisors (1069669503188).

1332016401556 is a wasteful number, since it uses less digits than its factorization.

1332016401556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46948491 (or 46948489 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 1332016401556 in words is "one trillion, three hundred thirty-two billion, sixteen million, four hundred one thousand, five hundred fifty-six".