28377349191072 has 108 divisors (see below), whose sum is σ = 93873284647506. Its totient is φ = 8107814050560.

The previous prime is 28377349191043. The next prime is 28377349191179. The reversal of 28377349191072 is 27019194377382.

28377349191072 is a `hidden beast` number, since 2 + 8 + 3 + 7 + 73 + 491 + 9 + 1 + 0 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26766592238736 + 1610756952336 = 5173644^2 + 1269156^2 .

It is a super-2 number, since 2×28377349191072² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1005419179 + ... + 1005447402.

Almost surely, 2^{28377349191072} is an apocalyptic number.

It is an amenable number.

28377349191072 is an abundant number, since it is smaller than the sum of its proper divisors (65495935456434).

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

28377349191072 is a wasteful number, since it uses less digits than its factorization.

28377349191072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010866611 (or 2010866593 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 28377349191072 in words is "twenty-eight trillion, three hundred seventy-seven billion, three hundred forty-nine million, one hundred ninety-one thousand, seventy-two".