87212261146 has 16 divisors (see below), whose sum is σ = 132191826624. Its totient is φ = 43148981664.

The previous prime is 87212261107. The next prime is 87212261207. The reversal of 87212261146 is 64116221278.

It is a junction number, because it is equal to n+sod(n) for n = 87212261099 and 87212261108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99310 + ... + 429286.

It is an arithmetic number, because the mean of its divisors is an integer number (8261989164).

Almost surely, 2^87212261146 is an apocalyptic number.

87212261146 is a deficient number, since it is larger than the sum of its proper divisors (44979565478).

87212261146 is a wasteful number, since it uses less digits than its factorization.

87212261146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331365.

The product of its digits is 64512, while the sum is 40.

The spelling of 87212261146 in words is "eighty-seven billion, two hundred twelve million, two hundred sixty-one thousand, one hundred forty-six".