83781477374451 has 8 divisors (see below), whose sum is σ = 111720524228304. Its totient is φ = 55848374385120.

The previous prime is 83781477374437. The next prime is 83781477374471. The reversal of 83781477374451 is 15447377418738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83781477374451 - 2¹⁰ = 83781477373427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83781477374411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485933240 + ... + 1485989621.

It is an arithmetic number, because the mean of its divisors is an integer number (13965065528538).

Almost surely, 2^{83781477374451} is an apocalyptic number.

83781477374451 is a deficient number, since it is larger than the sum of its proper divisors (27939046853853).

83781477374451 is a wasteful number, since it uses less digits than its factorization.

83781477374451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971932261.

The product of its digits is 442552320, while the sum is 69.

The spelling of 83781477374451 in words is "eighty-three trillion, seven hundred eighty-one billion, four hundred seventy-seven million, three hundred seventy-four thousand, four hundred fifty-one".