4156274212638 has 32 divisors (see below), whose sum is σ = 8581205809152. Its totient is φ = 1340653826400.

The previous prime is 4156274212591. The next prime is 4156274212667. The reversal of 4156274212638 is 8362124726514.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509495 + ... + 3822317.

It is an arithmetic number, because the mean of its divisors is an integer number (268162681536).

Almost surely, 2^{4156274212638} is an apocalyptic number.

4156274212638 is an abundant number, since it is smaller than the sum of its proper divisors (4424931596514).

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

4156274212638 is a wasteful number, since it uses less digits than its factorization.

4156274212638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329880.

The product of its digits is 3870720, while the sum is 51.

The spelling of 4156274212638 in words is "four trillion, one hundred fifty-six billion, two hundred seventy-four million, two hundred twelve thousand, six hundred thirty-eight".