1377637777645 has 8 divisors (see below), whose sum is σ = 1740174035040. Its totient is φ = 1044104420880.

The previous prime is 1377637777639. The next prime is 1377637777657. The reversal of 1377637777645 is 5467777367731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1377637777645 - 2¹¹ = 1377637775597 is a prime.

It is a super-3 number, since 3×1377637777645³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7250725051 + ... + 7250725240.

It is an arithmetic number, because the mean of its divisors is an integer number (217521754380).

Almost surely, 2^{1377637777645} is an apocalyptic number.

It is an amenable number.

1377637777645 is a deficient number, since it is larger than the sum of its proper divisors (362536257395).

1377637777645 is a wasteful number, since it uses less digits than its factorization.

1377637777645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14501450315.

The product of its digits is 762365520, while the sum is 70.

The spelling of 1377637777645 in words is "one trillion, three hundred seventy-seven billion, six hundred thirty-seven million, seven hundred seventy-seven thousand, six hundred forty-five".