7157781480 has 128 divisors (see below), whose sum is σ = 22028054400. Its totient is φ = 1860019200.

The previous prime is 7157781469. The next prime is 7157781503. The reversal of 7157781480 is 841877517.

It is a super-3 number, since 3×7157781480³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793395 + ... + 802365.

It is an arithmetic number, because the mean of its divisors is an integer number (172094175).

Almost surely, 2^7157781480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7157781480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11014027200).

7157781480 is an abundant number, since it is smaller than the sum of its proper divisors (14870272920).

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

7157781480 is a wasteful number, since it uses less digits than its factorization.

7157781480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9155 (or 9151 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 48.

The square root of 7157781480 is about 84603.6729699131. The cubic root of 7157781480 is about 1927.1971521413.

The spelling of 7157781480 in words is "seven billion, one hundred fifty-seven million, seven hundred eighty-one thousand, four hundred eighty".