78213467623733 has 8 divisors (see below), whose sum is σ = 84975285452568. Its totient is φ = 71558135115264.

The previous prime is 78213467623729. The next prime is 78213467623751. The reversal of 78213467623733 is 33732676431287.

It can be written as a sum of positive squares in 4 ways, for example, as 3154151136049 + 75059316487684 = 1775993^2 + 8663678^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 78213467623733 - 2² = 78213467623729 is a prime.

It is a super-2 number, since 2×78213467623733² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78213467623763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26621328560 + ... + 26621331497.

It is an arithmetic number, because the mean of its divisors is an integer number (10621910681571).

Almost surely, 2^{78213467623733} is an apocalyptic number.

It is an amenable number.

78213467623733 is a deficient number, since it is larger than the sum of its proper divisors (6761817828835).

78213467623733 is a wasteful number, since it uses less digits than its factorization.

78213467623733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53242660183.

The product of its digits is 128024064, while the sum is 62.

The spelling of 78213467623733 in words is "seventy-eight trillion, two hundred thirteen billion, four hundred sixty-seven million, six hundred twenty-three thousand, seven hundred thirty-three".