1977947354360 has 32 divisors (see below), whose sum is σ = 4450482036000. Its totient is φ = 791161077120.

The previous prime is 1977947354333. The next prime is 1977947354363. The reversal of 1977947354360 is 634537497791.

It is a super-2 number, since 2×1977947354360² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977947354363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312790 + ... + 2383130.

It is an arithmetic number, because the mean of its divisors is an integer number (139077563625).

Almost surely, 2^{1977947354360} is an apocalyptic number.

1977947354360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1977947354360 is an abundant number, since it is smaller than the sum of its proper divisors (2472534681640).

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

1977947354360 is a wasteful number, since it uses less digits than its factorization.

1977947354360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116551 (or 1116547 counting only the distinct ones).

The product of its (nonzero) digits is 120022560, while the sum is 65.

The spelling of 1977947354360 in words is "one trillion, nine hundred seventy-seven billion, nine hundred forty-seven million, three hundred fifty-four thousand, three hundred sixty".