672995161440 has 240 divisors, whose sum is σ = 2714414183712. Its totient is φ = 153827444736.

The previous prime is 672995161427. The next prime is 672995161463. The reversal of 672995161440 is 44161599276.

672995161440 is a `hidden beast` number, since 6 + 7 + 2 + 99 + 51 + 61 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3618469 + ... + 3799908.

Almost surely, 2^672995161440 is an apocalyptic number.

672995161440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

672995161440 is an abundant number, since it is smaller than the sum of its proper divisors (2041419022272).

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

672995161440 is a wasteful number, since it uses less digits than its factorization.

672995161440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7418411 (or 7418394 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 672995161440 in words is "six hundred seventy-two billion, nine hundred ninety-five million, one hundred sixty-one thousand, four hundred forty".