1377870551651 has 12 divisors (see below), whose sum is σ = 1514973987912. Its totient is φ = 1252233180000.

The previous prime is 1377870551609. The next prime is 1377870551653. The reversal of 1377870551651 is 1561550787731.

It is not a de Polignac number, because 1377870551651 - 2⁶ = 1377870551587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1377870551653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1306250 + ... + 2112351.

It is an arithmetic number, because the mean of its divisors is an integer number (126247832326).

Almost surely, 2^{1377870551651} is an apocalyptic number.

1377870551651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1377870551651 is a deficient number, since it is larger than the sum of its proper divisors (137103436261).

1377870551651 is a wasteful number, since it uses less digits than its factorization.

1377870551651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421954 (or 3421943 counting only the distinct ones).

The product of its (nonzero) digits is 6174000, while the sum is 56.

The spelling of 1377870551651 in words is "one trillion, three hundred seventy-seven billion, eight hundred seventy million, five hundred fifty-one thousand, six hundred fifty-one".