3640621522142 has 32 divisors (see below), whose sum is σ = 6225625004544. Its totient is φ = 1581953284800.

The previous prime is 3640621522091. The next prime is 3640621522183. The reversal of 3640621522142 is 2412251260463.

It is a junction number, because it is equal to n+sod(n) for n = 3640621522096 and 3640621522105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40896359 + ... + 40985282.

It is an arithmetic number, because the mean of its divisors is an integer number (194550781392).

Almost surely, 2^{3640621522142} is an apocalyptic number.

3640621522142 is a deficient number, since it is larger than the sum of its proper divisors (2585003482402).

3640621522142 is a wasteful number, since it uses less digits than its factorization.

3640621522142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81881744.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 3640621522142 in words is "three trillion, six hundred forty billion, six hundred twenty-one million, five hundred twenty-two thousand, one hundred forty-two".