83401579154 has 4 divisors (see below), whose sum is σ = 125102368734. Its totient is φ = 41700789576.

The previous prime is 83401579141. The next prime is 83401579193. The reversal of 83401579154 is 45197510438.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45197510438 = 2 ⋅22598755219.

It can be written as a sum of positive squares in only one way, i.e., 82556804929 + 844774225 = 287327^2 + 29065^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83401579099 and 83401579108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20850394787 + ... + 20850394790.

Almost surely, 2^83401579154 is an apocalyptic number.

83401579154 is a deficient number, since it is larger than the sum of its proper divisors (41700789580).

83401579154 is a wasteful number, since it uses less digits than its factorization.

83401579154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41700789579.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 83401579154 in words is "eighty-three billion, four hundred one million, five hundred seventy-nine thousand, one hundred fifty-four".