1626709399632 has 60 divisors (see below), whose sum is σ = 4554863613300. Its totient is φ = 541958160384.

The previous prime is 1626709399613. The next prime is 1626709399639. The reversal of 1626709399632 is 2369939076261.

It can be written as a sum of positive squares in 2 ways, for example, as 820118604816 + 806590794816 = 905604^2 + 898104^2 .

It is a super-2 number, since 2×1626709399632² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1626709399632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626709399639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2617393 + ... + 3178704.

It is an arithmetic number, because the mean of its divisors is an integer number (75914393555).

Almost surely, 2^{1626709399632} is an apocalyptic number.

1626709399632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1626709399632 is an abundant number, since it is smaller than the sum of its proper divisors (2928154213668).

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

1626709399632 is a wasteful number, since it uses less digits than its factorization.

1626709399632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798060 (or 5798051 counting only the distinct ones).

The product of its (nonzero) digits is 39680928, while the sum is 63.

The spelling of 1626709399632 in words is "one trillion, six hundred twenty-six billion, seven hundred nine million, three hundred ninety-nine thousand, six hundred thirty-two".