157421706743807 has 8 divisors (see below), whose sum is σ = 172074188039040. Its totient is φ = 142826128289560.

The previous prime is 157421706743801. The next prime is 157421706743809. The reversal of 157421706743807 is 708347607124751.

It is a happy number.

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 157421706743807 - 2³⁶ = 157352987267071 is a prime.

It is a super-3 number, since 3×157421706743807³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157421706743807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157421706743801) 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, 14225704457 + ... + 14225715522.

It is an arithmetic number, because the mean of its divisors is an integer number (21509273504880).

Almost surely, 2^{157421706743807} is an apocalyptic number.

157421706743807 is a deficient number, since it is larger than the sum of its proper divisors (14652481295233).

157421706743807 is a wasteful number, since it uses less digits than its factorization.

157421706743807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28451420493.

The product of its (nonzero) digits is 55319040, while the sum is 62.

The spelling of 157421706743807 in words is "one hundred fifty-seven trillion, four hundred twenty-one billion, seven hundred six million, seven hundred forty-three thousand, eight hundred seven".