83123620417154 has 4 divisors (see below), whose sum is σ = 124685430625734. Its totient is φ = 41561810208576.

The previous prime is 83123620417027. The next prime is 83123620417169. The reversal of 83123620417154 is 45171402632138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55396834839025 + 27726785578129 = 7442905^2 + 5265623^2 .

It is a junction number, because it is equal to n+sod(n) for n = 83123620417099 and 83123620417108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20780905104287 + ... + 20780905104290.

Almost surely, 2^{83123620417154} is an apocalyptic number.

83123620417154 is a deficient number, since it is larger than the sum of its proper divisors (41561810208580).

83123620417154 is a wasteful number, since it uses less digits than its factorization.

83123620417154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41561810208579.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 83123620417154 in words is "eighty-three trillion, one hundred twenty-three billion, six hundred twenty million, four hundred seventeen thousand, one hundred fifty-four".