91619954248 has 8 divisors (see below), whose sum is σ = 171787414230. Its totient is φ = 45809977120.

The previous prime is 91619954219. The next prime is 91619954249. The reversal of 91619954248 is 84245991619.

It can be written as a sum of positive squares in only one way, i.e., 77931422244 + 13688532004 = 279162^2 + 116998^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×91619954248³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 91619954192 and 91619954201.

It is not an unprimeable number, because it can be changed into a prime (91619954249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5726247133 + ... + 5726247148.

Almost surely, 2^91619954248 is an apocalyptic number.

It is an amenable number.

91619954248 is a deficient number, since it is larger than the sum of its proper divisors (80167459982).

91619954248 is a wasteful number, since it uses less digits than its factorization.

91619954248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452494287 (or 11452494283 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 58.

The spelling of 91619954248 in words is "ninety-one billion, six hundred nineteen million, nine hundred fifty-four thousand, two hundred forty-eight".