90955100551 has 4 divisors (see below), whose sum is σ = 103948686352. Its totient is φ = 77961514752.

The previous prime is 90955100539. The next prime is 90955100611. The reversal of 90955100551 is 15500155909.

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

It is a cyclic number.

It is not a de Polignac number, because 90955100551 - 2²³ = 90946711943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90955100851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6496792890 + ... + 6496792903.

It is an arithmetic number, because the mean of its divisors is an integer number (25987171588).

Almost surely, 2^90955100551 is an apocalyptic number.

90955100551 is a deficient number, since it is larger than the sum of its proper divisors (12993585801).

90955100551 is a wasteful number, since it uses less digits than its factorization.

90955100551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12993585800.

The product of its (nonzero) digits is 50625, while the sum is 40.

The spelling of 90955100551 in words is "ninety billion, nine hundred fifty-five million, one hundred thousand, five hundred fifty-one".