78161237760 has 144 divisors (see below), whose sum is σ = 249738650784. Its totient is φ = 20833714176.

The previous prime is 78161237743. The next prime is 78161237771. The reversal of 78161237760 is 6773216187.

It is a super-2 number, since 2×78161237760² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15714634 + ... + 15719606.

It is an arithmetic number, because the mean of its divisors is an integer number (1734296186).

Almost surely, 2^78161237760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78161237760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124869325392).

78161237760 is an abundant number, since it is smaller than the sum of its proper divisors (171577413024).

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

78161237760 is a wasteful number, since it uses less digits than its factorization.

78161237760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9090 (or 9076 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 78161237760 in words is "seventy-eight billion, one hundred sixty-one million, two hundred thirty-seven thousand, seven hundred sixty".