747774156377 has 16 divisors (see below), whose sum is σ = 803628568512. Its totient is φ = 693316815360.

The previous prime is 747774156221. The next prime is 747774156383. The reversal of 747774156377 is 773651477747.

It is a happy number.

It is not a de Polignac number, because 747774156377 - 2⁸ = 747774156121 is a prime.

It is a super-2 number, since 2×747774156377² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (747774156977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920363 + ... + 1530560.

It is an arithmetic number, because the mean of its divisors is an integer number (50226785532).

Almost surely, 2^747774156377 is an apocalyptic number.

It is an amenable number.

747774156377 is a deficient number, since it is larger than the sum of its proper divisors (55854412135).

747774156377 is a wasteful number, since it uses less digits than its factorization.

747774156377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451208.

The product of its digits is 169414560, while the sum is 65.

The spelling of 747774156377 in words is "seven hundred forty-seven billion, seven hundred seventy-four million, one hundred fifty-six thousand, three hundred seventy-seven".