60891987412 has 6 divisors (see below), whose sum is σ = 106560977978. Its totient is φ = 30445993704.

The previous prime is 60891987407. The next prime is 60891987427. The reversal of 60891987412 is 21478919806.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59909415696 + 982571716 = 244764^2 + 31346^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7611498423 + ... + 7611498430.

Almost surely, 2^60891987412 is an apocalyptic number.

It is an amenable number.

60891987412 is a deficient number, since it is larger than the sum of its proper divisors (45668990566).

60891987412 is a wasteful number, since it uses less digits than its factorization.

60891987412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15222996857 (or 15222996855 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 60891987412 in words is "sixty billion, eight hundred ninety-one million, nine hundred eighty-seven thousand, four hundred twelve".