618877487645 has 32 divisors (see below), whose sum is σ = 773817408000. Its totient is φ = 474756581376.

The previous prime is 618877487621. The next prime is 618877487653. The reversal of 618877487645 is 546784778816.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 618877487645 - 2³⁴ = 601697618461 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4216706 + ... + 4361004.

It is an arithmetic number, because the mean of its divisors is an integer number (24181794000).

Almost surely, 2^618877487645 is an apocalyptic number.

It is an amenable number.

618877487645 is a deficient number, since it is larger than the sum of its proper divisors (154939920355).

618877487645 is a wasteful number, since it uses less digits than its factorization.

618877487645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144677.

The product of its digits is 505774080, while the sum is 71.

The spelling of 618877487645 in words is "six hundred eighteen billion, eight hundred seventy-seven million, four hundred eighty-seven thousand, six hundred forty-five".