4256167378772 has 6 divisors (see below), whose sum is σ = 7448292912858. Its totient is φ = 2128083689384.

The previous prime is 4256167378763. The next prime is 4256167378811. The reversal of 4256167378772 is 2778737616524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2345541258256 + 1910626120516 = 1531516^2 + 1382254^2 .

It is a super-2 number, since 2×4256167378772² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4256167378699 and 4256167378708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532020922343 + ... + 532020922350.

It is an arithmetic number, because the mean of its divisors is an integer number (1241382152143).

Almost surely, 2^{4256167378772} is an apocalyptic number.

It is an amenable number.

4256167378772 is a deficient number, since it is larger than the sum of its proper divisors (3192125534086).

4256167378772 is a wasteful number, since it uses less digits than its factorization.

4256167378772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064041844697 (or 1064041844695 counting only the distinct ones).

The product of its digits is 165957120, while the sum is 65.

The spelling of 4256167378772 in words is "four trillion, two hundred fifty-six billion, one hundred sixty-seven million, three hundred seventy-eight thousand, seven hundred seventy-two".