78377601622 has 32 divisors (see below), whose sum is σ = 124425564480. Its totient is φ = 36974192640.

The previous prime is 78377601571. The next prime is 78377601623. The reversal of 78377601622 is 22610677387.

It is a happy number.

It is a super-2 number, since 2×78377601622² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78377601623) 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, 381118 + ... + 549550.

It is an arithmetic number, because the mean of its divisors is an integer number (3888298890).

Almost surely, 2^78377601622 is an apocalyptic number.

78377601622 is a deficient number, since it is larger than the sum of its proper divisors (46047962858).

78377601622 is a wasteful number, since it uses less digits than its factorization.

78377601622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168648.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 78377601622 in words is "seventy-eight billion, three hundred seventy-seven million, six hundred one thousand, six hundred twenty-two".