4006156352638 has 16 divisors (see below), whose sum is σ = 6559633536624. Its totient is φ = 1819839893760.

The previous prime is 4006156352537. The next prime is 4006156352657. The reversal of 4006156352638 is 8362536516004.

It is a junction number, because it is equal to n+sod(n) for n = 4006156352591 and 4006156352600.

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, 56977395 + ... + 57047662.

It is an arithmetic number, because the mean of its divisors is an integer number (409977096039).

Almost surely, 2^{4006156352638} is an apocalyptic number.

4006156352638 is a deficient number, since it is larger than the sum of its proper divisors (2553477183986).

4006156352638 is a wasteful number, since it uses less digits than its factorization.

4006156352638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114026667.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 4006156352638 in words is "four trillion, six billion, one hundred fifty-six million, three hundred fifty-two thousand, six hundred thirty-eight".