78243101373437 has 96 divisors (see below), whose sum is σ = 112747432533120. Its totient is φ = 53226750689280.

The previous prime is 78243101373413. The next prime is 78243101373449. The reversal of 78243101373437 is 73437310134287.

It is not a de Polignac number, because 78243101373437 - 2³⁸ = 77968223466493 is a prime.

It is a super-2 number, since 2×78243101373437² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78243101373407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 78452333 + ... + 79443405.

It is an arithmetic number, because the mean of its divisors is an integer number (1174452422220).

Almost surely, 2^{78243101373437} is an apocalyptic number.

78243101373437 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

78243101373437 is a deficient number, since it is larger than the sum of its proper divisors (34504331159683).

78243101373437 is a wasteful number, since it uses less digits than its factorization.

78243101373437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991723 (or 991716 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 53.

The spelling of 78243101373437 in words is "seventy-eight trillion, two hundred forty-three billion, one hundred one million, three hundred seventy-three thousand, four hundred thirty-seven".