8151697920 has 160 divisors (see below), whose sum is σ = 26765215488. Its totient is φ = 2114961408.

The previous prime is 8151697919. The next prime is 8151698011. The reversal of 8151697920 is 297961518.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 8151697920.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269817 + ... + 298503.

Almost surely, 2^8151697920 is an apocalyptic number.

8151697920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8151697920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13382607744).

8151697920 is an abundant number, since it is smaller than the sum of its proper divisors (18613517568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8151697920 is a wasteful number, since it uses less digits than its factorization.

8151697920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28750 (or 28734 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 48.

The square root of 8151697920 is about 90286.7538457331. The cubic root of 8151697920 is about 2012.5624209128.

The spelling of 8151697920 in words is "eight billion, one hundred fifty-one million, six hundred ninety-seven thousand, nine hundred twenty".