73665714378 has 32 divisors (see below), whose sum is σ = 156508545600. Its totient is φ = 23049432576.

The previous prime is 73665714349. The next prime is 73665714379. The reversal of 73665714378 is 87341756637.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73665714379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2951751 + ... + 2976602.

It is an arithmetic number, because the mean of its divisors is an integer number (4890892050).

Almost surely, 2^73665714378 is an apocalyptic number.

73665714378 is an abundant number, since it is smaller than the sum of its proper divisors (82842831222).

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

73665714378 is a wasteful number, since it uses less digits than its factorization.

73665714378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928486.

The product of its digits is 17781120, while the sum is 57.

The spelling of 73665714378 in words is "seventy-three billion, six hundred sixty-five million, seven hundred fourteen thousand, three hundred seventy-eight".