3640245021542 has 16 divisors (see below), whose sum is σ = 5648827064400. Its totient is φ = 1757306466720.

The previous prime is 3640245021481. The next prime is 3640245021557. The reversal of 3640245021542 is 2451205420463.

It is a super-2 number, since 2×3640245021542² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3640245021496 and 3640245021505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017317 + ... + 2883647.

It is an arithmetic number, because the mean of its divisors is an integer number (353051691525).

Almost surely, 2^{3640245021542} is an apocalyptic number.

3640245021542 is a deficient number, since it is larger than the sum of its proper divisors (2008582042858).

3640245021542 is a wasteful number, since it uses less digits than its factorization.

3640245021542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899991.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 3640245021542 in words is "three trillion, six hundred forty billion, two hundred forty-five million, twenty-one thousand, five hundred forty-two".